Packet #1449061

Database ID:	1449061
Mesh Packet ID:	`0xe62f7c67` Used for correlation across gateways
Timestamp:	2026-07-08 00:00:21 UTC
From Node:	Jose Jurta Fijo1 📡☀️📶 (JJF1)
To Node:	TQB05-CL-8 (TQB5)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	STechHome 🇵🇹📡-GW-8 (STH)
Channel:	LongFast
RSSI:	-127 dBm
SNR:	-18.25 dBm
Hop Info:	3/5 hops Start: 5, Limit: 2
Relay Node:	`44` Last byte of the last hop that relayed this packet

Latitude:	42.270720°
Longitude:	-8.768717°
Altitude:	45 m
Precision:	14 bits

Raw Packet Analysis

Complete field breakdown and MQTT privacy/exposure analysis

Packet Structure

MQTT Packet Flow:
ServiceEnvelope (MQTT layer) → MeshPacket (Mesh layer) → Decoded Payload (Application data)

Total Size:	27 bytes
Gateway:	!db51869c
Channel:	LongFast
Payload Type:	POSITION_APP
Hop Count:	3 / 5

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!db51869c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (27 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`698517807` Source node ID	uint32
`to`	`1658395348` Target node ID	uint32
`decoded.portnum`	`POSITION_APP` POSITION_APP	enum
`decoded.payload_length`	`27` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`3` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-127.0` dBm Signal strength at gateway	int32
`rx_snr`	`-18.25` dB Signal quality at gateway	float
`rx_time`	`1783468816` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	Not set	enum
`delayed`	Not set	enum
`channel`	`8` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`68` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	Not set	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
✓ Gateway node ID tracked
✓ Reduced position precision: ~1500.0m accuracy

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (3 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db51869c`
Position Precision:	14 bits (~1500.0m accuracy)
Position precision meters:	`1500.0`
Signal Metrics:	RSSI: -127.0 dBm SNR: -18.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	27 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 42.27072, "longitude": -8.7687168, "altitude": 45, "sats_in_view": null, "precision_bits": 14 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 698517807, "to": 1658395348, "channel": 8, "decoded": { "portnum": "POSITION_APP", "payload": "DQAAMhkVAADG+hgtKAFQAHgAgAEAsAETuAEO", "request_id": 972037957, "bitfield": 1 }, "id": 3861871719, "rx_time": 1783468816, "rx_snr": -18.25, "hop_limit": 2, "rx_rssi": -127, "hop_start": 5, "relay_node": 68 }, "channel_id": "LongFast", "gateway_id": "!db51869c" }, "mesh_packet": { "from": 698517807, "to": 1658395348, "channel": 8, "decoded": { "portnum": "POSITION_APP", "payload": "DQAAMhkVAADG+hgtKAFQAHgAgAEAsAETuAEO", "request_id": 972037957, "bitfield": 1, "parsed_payload": { "latitude_i": 422707200, "longitude_i": -87687168, "altitude": 45, "location_source": "LOC_MANUAL", "altitude_geoidal_separation": 0, "ground_speed": 0, "ground_track": 0, "seq_number": 19, "precision_bits": 14, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } }, "id": 3861871719, "rx_time": 1783468816, "rx_snr": -18.25, "hop_limit": 2, "rx_rssi": -127, "hop_start": 5, "relay_node": 68 } }

Raw Packet Data (27 bytes)

0d00003219150000c6fa182d280150007800800100b00113b8010e

Hex Analysis:

Size:	27 bytes
Format:	Protobuf (Protocol Buffers)
Encoding:	Binary with varint and length-delimited fields

This is the raw protobuf-encoded payload as received from MQTT. The structure follows the Meshtastic protobuf schema definitions.

Packet #1449061 Success

Packet Information

Payload Data

Decoded Data: